| <!DOCTYPE html> | |
| <p>Test that changing spanner margins dynamically works.</p> | |
| <p>Below there should be a blue square with a thick black border, and no visible FAIL.</p> | |
| <div style="overflow:hidden; width:20em; background:black;"> | |
| <div style="height:14em; margin:3em; background:blue;"></div> | |
| </div> |